Price Computing Scales are stand-alone scales that can be operated either by mains power or internal rechargeable battery power. These are used at grocers, convenience stores, delis, market stalls, butchers, fishmongers and supermarkets. Simply place your item on the scale, type in the 'Price per Kg' of the item - the scale will then display the weight of the item and the calculated price. All our pricing scales are Trade Approved for UK retail use. Models are available in capacities 3kg, 6kg, 15kg or 30kg capacity with flat plate or optional stainless steel scoop.